CECON 2024 Technical Tour of Reclaimed Water Pump Station
Reuse, Repurpose, Recycle: How The City of Frisco is Repurposing a Potable Water Ground Storage Tank to Serve Midland PGA National Headquarters
Limited availability opportunity. All full or single-day registered attendees are eligible to attend. Sign-up is free but required to attend the tour. When initial ticket allotment is full, a waitlist will be created. Attendees will be notified of status the week leading up to the event.
Abstract
The City of Frisco has been utilizing reuse water for irrigation since 2001, primarily focused on parks, golf courses, and the Frisco Independent School District. The reuse system is supplied by two facilities, the Stewart Creek West Wastewater Treatment Plant (SCWWWTP) and the Panther Creek Wastewater Treatment Plant (PCWWTP) and consists of approximately 70,000 LF of pipe ranging from 1.5 inches to 24 inches. Currently, reuse water demands are served completely by pump stations at each wastewater treatment plants and no storage. With the high cost of new water supply, Frisco continues to evaluate each opportunity to optimize the existing supply and utilize reuse water where feasible. The previous major expansion of the reuse system was constructed to serve “The North Platinum Corridor”. “The North Platinum Corridor” consists of four high-end developments anchored by The Star development home to the Dallas Cowboys headquarters and training facilities. These developments are projected to increase the average reuse water demand by 19%, to 2.5 MGD, and increase the maximum reuse demand 26%, to 4.3 MGD . In 2018 the Professional Golf Association of America (PGA of America) announced it was constructing a new headquarters, The Midland PGA National Headquarters, within a 2,500 acre development called, “The Fields.” The Fields development would include two 18 hole golf courses, one 9 hole golf course, commercial, and mixed-use residential land use types. The developer requested 2.2 MGD of reuse water, to irrigate the golf courses and general landscape, which would effectively double the current average day reuse demand with the North Platinum Corridor.
The City performed a reuse system development plan in 2017 to identify improvements required to serve the North Platinum Corridor and known near term development. However, the Fields development had not been proposed to the City at that time. A hydraulic analysis was performed utilizing the City’s hydraulic model to be determine if sufficient reuse supply and pumping capacity was available to serve the proposed development. Through the hydraulic assessment it was discovered the pump stations did not have sufficient head to meet the peak reuse demand and maintain a minimum system pressure of 55psi. In addition, the project team reviewed the available effluent from each wastewater treatment plant. It was determined that while there was sufficient volume of supply from both wastewater treatment plants to meet demands, the peak reuse demands occurred at night when effluent flow was the lowest. In the spirt of reuse, recycle, repurpose; a decommissioned potable water ground storage tank is proposed to be repurposed to provide storage in the reuse water system. This tank will allow the City to capture the unallocated effluent during the day and utilize flow from the tank during the night to help meet the additional demands associated with The Fields development. This presentation will provide background on the City’s reuse system, the hydraulic analysis of the system, phased improvement plan, and considerations for other Owners of direct nonpotable reuse water systems.
